All Answers 358090 Answers

When it hits the ground, h  = 0  ....so we have

0  =  -16t^2  + 255      we could use the quad formula, but this approach is faster

add  16t^2 to both sides

16t^2   = 255      divide both sides by 16

t^2  =   255/16       take the positive root of both sides

t  = sqrt (255 /16)   ≈   4 seconds

Here's another approach....

Nurul must have started with  840 - 120   = 720   = 2/5 of the money

And the other two share the remaining 3/5  in a ratio of 4 : 5

So  Hashim gets (4/9)(3/5)   =  12/45  =  4/15 = 480

And Zalina gets (5/9) (3/5) = 15/45  = 5/15  =  600

So....Nurul  gets  1 - 9/15  = 6/15

And the beginning ratio =     4 : 6 : 5

After each recieve 120, they have a total of  2160

And Nurul has  840/2160  = 7/18  of the total

And Hashim has 600/2160 = 5/18  of the total

And Zalina has  1 - 12/18  = 6/18  of the total

So the ending ratio is :

5 : 7  : 6

(a)

cos x + 0.582 = 0

cos x = 0 - 0.582

x = acos(-0.582)

x ≈ 125.591º       and      x ≈ 360º - 125.591º ≈ 234.409º

(b)

cot x = -0.836

tan x = -1/0.836

tan x ≈ -1.196

x ≈ atan(-1.196)

x ≈ -50.1º

x ≈ -50.1º + 360º ≈ 309.9º       and       x ≈ 309.9º - 180º ≈ 129.9º

There are an infinite number of values between any two values on the number line.......

Search for information on the Simplex method.

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We could choose any of the 4 colors, first  = 4 ways

Then, we could choose any of the 3 remaining colors  = 3 ways

Then, we could choose between the two remaining colors  = 2 ways....so....

4 x 3 x 2   =   24 ways

Numerical analysis for life!

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23.75.

Solve for x:
2 (4 + 2 (3 - 5 x)) = 5 (2 + 2 (3 - 3 x))

2 (3 - 5 x) = 6 - 10 x:
2 (6 - 10 x + 4) = 5 (2 + 2 (3 - 3 x))

Add like terms. 4 + 6 = 10:
2 (10 - 10 x) = 5 (2 + 2 (3 - 3 x))

2 (3 - 3 x) = 6 - 6 x:
2 (10 - 10 x) = 5 (6 - 6 x + 2)

Add like terms. 2 + 6 = 8:
2 (10 - 10 x) = 5 (8 - 6 x)

Expand out terms of the left hand side:
20 - 20 x = 5 (8 - 6 x)

Expand out terms of the right hand side:
20 - 20 x = 40 - 30 x

Add 30 x to both sides:
30 x - 20 x + 20 = (30 x - 30 x) + 40

30 x - 30 x = 0:
30 x - 20 x + 20 = 40

30 x - 20 x = 10 x:
10 x + 20 = 40

Subtract 20 from both sides:
10 x + (20 - 20) = 40 - 20

20 - 20 = 0:
10 x = 40 - 20

40 - 20 = 20:
10 x = 20

Divide both sides of 10 x = 20 by 10:
(10 x)/10 = 20/10

10/10 = 1:
x = 20/10

The gcd of 20 and 10 is 10, so 20/10 = (10×2)/(10×1) = 10/10×2 = 2:
Answer: |x = 2

THAT SUCKS SO AM I

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Yep there the best.

I kinda like geometry, but I HATE algebra.

PERSONALLY I AGREE

all math!! lol

Calculate:  (length² + width² + height²)^1/2

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YES I AM

The cost of a good is

​$370

including

2.2%

sales tax. What is the cost excluding​ tax?

$370 / 1.022 =$362.04 - The cost excluding sales tax of 2.2%.

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